A large healthy female Three-toed Box Turtle. Animal protein will fatten her up. Try moistened Dog Kibble with a good Calcium with Vitamin D3 supplement added. I feed mine moistened floating Catfish Chow occasionally.
Feed well thawed frozen Mixed Vegetables. The best greens are Collards. You can buy them chopped and frozen and mix with food. Bananas, Grapes, Berries, Mushrooms, Melons, Squash, Carrots are all good. Tomatoes OK, as well.
No - Cabbage, Spinach, or Iceberg Head Lettuce.
Your Iguana looks healthy enough. Just about the same diet.
jsc-----"As hard as I've tried, just can't NOT do this"
John Crickmer